My 2009 Toyota Corolla S upon starting, after sitting overnite has started to make a steam sound as if a head gasket is leaking (a Whoosh sound). This sound is only momentary and it does not occur any other time during the day, but has occurred the last 3 mornings. Got any idea what this is and what is causing it??
Oct 11, 2012 at 4:57 PM
